Changeable knife-handle.



W. F. LUTZ, JR. CHANGEABLE KNIFE HANDLE. APPLICATION man AUG-6, 1915.

1,202,299. Patented Oct. 24,1916.-

' I I v avwf Q ap g William E m $1 Li-5 6147mm Mwg , vN ED I OFFER 1 J WILLIA IE. rurz an or sItoo LYN, NEW YORK. I I" I j GHANGEABLE KNIFE-H ND E. I

To all whom it may concern: 7

Be it known that I, WILLIAM F. LUTZ, J r., a citizen of the United States, and residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Changeable Knife-Handles, of which the following is a specification, such as will enable those skilled in the art to which it appertains to make and'use the same.

This invention relates to butchers knives, carving knives and other knives of this class, and the object thereof is to provide a knife of this class 'with a detachable handle, or in which the handle may be detached from the blade whenever desired, and a new blade substituted for an old one, or a'broken one, and with this and other objects in view, the

invention consists-in'a device or devices of. the class specified, constructed as hGIGlIl-L after described and claimed.

The invention is fully disclosed in the following specification, of which the accompanying drawing forms a part, in which the separate parts of my improvement are designated by suitable reference characters in each of the views, and in which Figure lisa side view of a knife, the handle of which is made according to my invention; Fig. 2 a longitudinal section on the line 22 of Fig. 1; Fig. 3 a similar section on the line 3-3 of Fig. 1; Fig. 4 a view showing the handle open with the blades detached; and Fig. 5 a view of the shank portion of the blade.

In the practice of my invention, I provide a knife blade handle a of the usual general form, but divided centrally and longitudinally, and in the plane of the blade into two separate parts a and a hinged together at a and the parts a and a consist of outer block members of, and inner plate members a and a and said inner plate members a and a are provided in their inLer faces with depressed spaces a provided with projecting circular members a", and the spaces a are of the form shown in Fig. 4, and are adapted to receive the shank portion 6 of a blade 5 which is flat in form and provided with circular apertures 6 adapted to receive the circular projectionsa The block members a of the handle are secured to the inner plate members a and a by rivets a and the plate member a is provided at the free edge portion thereof with lock devices 0, formed v Specification of Letters fatent. Patented Oct 24:, 1916, Application filed August 6, 1915,; Serial 110.43,!)48. v I

the cut out portion 0 and said lock devices are arranged at right angles to said plate member a and said lock devices 0 are also provided with 'backwardly directed projections 0 and the plate member a is provided with slots d, arranged at the free edge portion of .said plate and in line with the lock devices c, and through which said devices are adapted to pass,and between said slots d is material of said plate member a, and which is adapted to prevent the outward -movement of a lock'plate e,;provided witha finger piece c and the lock plate 6 is prosaid plate member a", as indicated by i;

formed a projecting member 6?, cut fromthe vided with two slots or recesses 6 through which the lock devices 0 areada'pted to pass, and between said slots e is arranged another slot 6 in which the projecting member. d is adapted to operate.

In attaching a knife blade similar to that shown in Fig. 5 to the handle, the shank portion 2) thereof is placed in one of the depressed spaces a in one of the plate members of one part of the handle, after which the other part of the handle with the plate member is swung over and on top of the said shank portion of the knife blade, the lock plate 6 being first extended into the position shown in dotted lines in Fig. 3, to permit the lock devices 0 to pass freely through the apertures (Z and c after which the said lock plate e is forced inwardly into the position shown in full lines in Fig. 3, in which position the edge portion of the slots 0 adjacent to the projecting members 0 pass over said projecting members as clearly shown in said figure, and prevent the separation of the separate parts of the handle member a, and it will be understood that in order to detach the knife blade I)? from the handle member a, the lock plate e is withdrawn from its full line position, into the position shown in dotted lines in Fig. 3, in which position the lock devices 0 are free to pass through the slots 6 and 01.

By means of my improvement, I provide a knife of the class specified, with a detachable handle, whereby a new blade may be substituted for an old one, or a broken one, whenever desired, and while I have shown and described the preferred form of my improvement, myinvention is not limited to the exact details of construction herein shown and described, and changes therein and modifications thereof may be made within the scope of the appended claims, without departing from the spirit of my invention or sacrificing its advantages.

1 Having fully described my invention,

what I claim as new and desire to secure by 7 through the blade end of the handle and the -0o1ileiot an; patent m :be attained for blade being provided with a shank which is placed in one of said recesses when the separate parts of the handle are open, and said handle being also provided with a longitudinally movable locking slide which operates in connection with the said plates and whereby the separate parts of'th'e handle are locked together, and said plates being also provided-in said recesses with raised members which fit in corresponding apertures in the-shank of the handle.

2'. A knife of the class described comprising a handle and a blade, the handle being composedof separate parts hinged together at one side and said parts being provided on their,inner sides with plates having longitudina l recesses forming a longitudinal chamber'which opens through the blade end of the handle and the blade being provided with a shank which is placed in one of said recesses when the separate parts of the handle are open, one of said plates being provided with apertures and the other with looking ,devices which pass through said 7 apertures, and said handle being also pron Y WILLIAM F. Ln'rz, JR. Witnesses: I H, E. THOMPSON,

M. BOOKELMAN.

Ive cents each; by tam-"11 the "commimoner o1 intents, wumngton, D. 0." 

